EP 4045696 A1 20220824 - METAL SHEET TREATMENT METHOD AND METAL SHEET TREATED WITH THIS METHOD
Title (en)
METAL SHEET TREATMENT METHOD AND METAL SHEET TREATED WITH THIS METHOD
Title (de)
VERFAHREN ZUR BEHANDLUNG VON METALLBLECHEN UND MIT DIESEM VERFAHREN BEHANDELTES METALLBLECH
Title (fr)
PROCÉDÉ DE TRAITEMENT DE FEUILLE MÉTALLIQUE ET FEUILLE MÉTALLIQUE TRAITÉE À L'AIDE DE CE PROCÉDÉ
Publication
Application
Priority
- IB 2019058806 W 20191016
- IB 2020059548 W 20201012
Abstract (en)
[origin: WO2021074672A1] The invention relates to a steel substrate coated on at least one of its faces with a metallic coating based on zinc or its alloys wherein the metallic coating is itself coated with a conversion layer comprising: - at least one zinc sulphate, - wherein the conversion layer comprises neither zinc hydroxysulphate, nor free water molecules nor any compounds having free hydroxyl groups, - the surface density of sulphur in the conversion layer being greater than or equal to 0.5 mg/m2 and - the aluminum amount in the conversion layer being as follows: 0 < Al ≤ 13.0 mg.m-2. The invention also relates to the corresponding treatment method.
IPC 8 full level
C23C 22/68 (2006.01); C23C 2/06 (2006.01); C23C 2/26 (2006.01); C23C 22/53 (2006.01); C23C 22/74 (2006.01); C23C 22/83 (2006.01); C23C 28/00 (2006.01)
CPC (source: CN EP KR US)
C22C 18/00 (2013.01 - CN); C22C 18/04 (2013.01 - CN KR); C23C 2/06 (2013.01 - CN EP KR); C23C 2/26 (2013.01 - CN EP KR US); C23C 2/40 (2013.01 - CN KR); C23C 22/53 (2013.01 - CN EP KR US); C23C 22/68 (2013.01 - CN EP KR); C23C 22/74 (2013.01 - EP KR); C23C 22/82 (2013.01 - US); C23C 22/83 (2013.01 - CN EP KR); C23C 28/3225 (2013.01 - CN EP KR US); C23C 28/34 (2013.01 - KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2021074672 A1 20210422; BR 112022005241 A2 20220920; CA 3156473 A1 20210422; CA 3156473 C 20231107; CN 114555862 A 20220527; EP 4045696 A1 20220824; EP 4045696 B1 20231129; ES 2972634 T3 20240613; FI 4045696 T3 20240129; HU E064483 T2 20240328; JP 2022552999 A 20221221; JP 7386341 B2 20231124; KR 20220057615 A 20220509; MA 57380 B1 20231229; MX 2022004485 A 20220506; PL 4045696 T3 20240311; UA 127582 C2 20231018; US 2024093375 A1 20240321; WO 2021074765 A1 20210422; ZA 202202977 B 20221130
DOCDB simple family (application)
IB 2019058806 W 20191016; BR 112022005241 A 20201012; CA 3156473 A 20201012; CN 202080071223 A 20201012; EP 20792493 A 20201012; ES 20792493 T 20201012; FI 20792493 T 20201012; HU E20792493 A 20201012; IB 2020059548 W 20201012; JP 2022522896 A 20201012; KR 20227011647 A 20201012; MA 57380 A 20201012; MX 2022004485 A 20201012; PL 20792493 T 20201012; UA A202201534 A 20201012; US 202017768009 A 20201012; ZA 202202977 A 20220311